Cellnex's Net-Zero strategy is structured around seven key pillars: 1. Science-based reduction targets, 2. Energy transition, 3. Value chain engagement, 4. Circular economy practices, 5. Sustainable mobility, 6. Neutralisation of residual emissions, 7. Transparency and governance. The company plans to address residual emissions by financing high-quality carbon reduction and removal projects outside its value chain, aiming to foster positive impacts on ecosystems and local communities. Cellnex also aims to verify its Net-Zero target through the Science Based Targets initiative (SBTi). Key components of the reduction strategy include leveraging renewable energy through the purchase of Guarantees of Origin (GoOs) and expanding solar panel deployments.

In 2022, Cellnex developed a pilot project for the application of this internal rate to the activities of IT suppliers, corresponding to Scopes 3.1 and 3.2 (procurement) of the carbon footprint. However, the result was not satisfactory as comparability between supplier data was not possible due to the low maturity of the suppliers in terms of their emissions reporting. To prepare for the future implementation of an internal carbon price, in 2024 Cellnex has been working on strengthening Scope 3 emissions measurement initiatives through supplier participation in CDP Supply Chain and ESG clauses in contracts with third parties.